yes
If its the standard height, nothing. If they are screw in studs with tall nuts, then you will need tall valve covers.
No.
If you are asking about backlash, the setting for a solid cam would be on the cam card. Hydraulic cams don't have backlash, they have pre-load, which is usually about 1/2 turn.
It has 8 intakes and 8 exhaust if it's a V-8 engine.
1.6 ratio rockers were only offered in the aftermarket.
Yes. You could get them from the factory with them.
usually around 1200-1300 rpm
Factory stock, the 400 cu. in.
I ground roller cams for Erson, that were up to .650 lift.
Not unless someone put one on it. It's not factory.
no such thing as a pontiac small blockstock they rockers were 1.5 ratio
Chevy 350 small block engines with hydralic lifters set at 0 lash. That means start the engine and adjust the valve until it just quits clicking. Then tighten the nut approx 3/4-1 turn then set the next one.